Functionalized graphene oxide antibacterial material and preparation method thereof

An antibacterial material and a functionalized technology are applied in the field of functionalized graphene oxide antibacterial materials and their preparation, and can solve the problems of unstable antibacterial materials, easy shedding of silver nanoparticles, antibacterial properties, and unfavorable long-term use.

Inactive Publication Date: 2018-08-24
TIANJIN POLYTECHNIC UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this antibacterial material is unstable, and the silver nanoparticles are easy to fall off, which affects its antibacterial performance, which is not conducive to long-term use.
[0003] Graphene modification technology has been common in graphene applications, however, the modification of graphene with synergistic antimicrobial agents has hardly been reported.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Functionalized graphene oxide antibacterial material and preparation method thereof
  • Functionalized graphene oxide antibacterial material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of graphene oxide-based antibacterial material, comprising the steps of:

[0025] 1) Add 40ml of concentrated sulfuric acid to a 250ml three-necked flask and heat to 90°C, then mechanically stir, add 4g of potassium persulfate and 4g of phosphorus pentoxide, cool down to 80°C, add 5g of graphite, and react in a constant temperature water bath for 4.5 h, stop the reaction, after cooling to room temperature, dilute with 200ml distilled water, filter, and repeat washing with distilled water three times, dry to obtain pre-oxidized graphite.

[0026] 2) Add 60ml of concentrated sulfuric acid (in an ice-water bath) to a 250ml three-necked flask, stir mechanically for 30min, then add 2.5g of pre-oxidized graphite flakes and 0.5g of sodium nitrate, wait until the solid is completely dissolved, then slowly add 5g of potassium permanganate React for 30 minutes; then raise the temperature to 35°C, add 230ml of distilled water dropwise with a constant pressure ...

Embodiment 2

[0033] A preparation method of graphene oxide-based antibacterial material, comprising the steps of:

[0034] 1) Add 40ml of concentrated sulfuric acid to a 250ml three-necked flask and heat to 90°C, then mechanically stir, add 4g of potassium persulfate and 4g of phosphorus pentoxide at the same time, cool down to 80°C, then add 5g of graphite, and react in a constant temperature water bath for 4.5 h, stop the reaction, after cooling to room temperature, dilute with 200ml distilled water, filter, and repeat washing with distilled water three times, dry to obtain pre-oxidized graphite.

[0035] 2) Add 60ml of concentrated sulfuric acid (in an ice-water bath) to a 250ml three-necked flask, stir mechanically for 30min, then add 2.5g of pre-oxidized graphite flakes and 0.5g of sodium nitrate, until the solid is completely dissolved, slowly add 7.5g of potassium permanganate After reacting for 30min. Then raise the temperature to 35°C, add 230ml of distilled water dropwise with a...

Embodiment 3

[0040] A preparation method of graphene oxide-based antibacterial material, comprising the steps of:

[0041] 1) Add 50ml of concentrated sulfuric acid to a 250ml three-necked flask and heat to 95°C, then mechanically stir, add 4g of potassium persulfate and 4g of phosphorus pentoxide at the same time, cool down to 75°C, then add 5g of graphite, and react in a constant temperature water bath for 4.5 h, stop the reaction, after cooling to room temperature, dilute with 200ml distilled water, filter, and repeat washing with distilled water three times, dry to obtain pre-oxidized graphite.

[0042] 2) Add 70ml of concentrated sulfuric acid (in an ice-water bath) to a 250ml three-necked flask, stir mechanically for 30min, then add 2.5g of pre-oxidized graphite flakes and 0.5g of sodium nitrate, and slowly add 7.5g of potassium permanganate until the solid is completely dissolved After reacting for 30min. Then raise the temperature to 35°C, add 230ml of distilled water dropwise wit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a functionalized graphene oxide bacteriostatic material and a preparation method thereof. The method comprises the following steps that 1, graphene oxide, ammonium halide and a catalyst beneficial for esterification are added into an organic solvent to fully react at the temperature of 50 DEG C to 100 DEG C under the stirring condition, then the reaction products are centrifuged, supernatant is discarded, solids are collected after subnatant is subjected to water washing and alcohol washing, and freeze drying is conducted to obtain substance A, wherein the oxygen content of graphene oxide is 20%-50%, and carboxyl accounts for 15% of the total oxygen content; 2, the substance A and a sodium hypochlorite solution are mixed to be uniform according to the mass ratio of 1:(2-100) and fully react at the temperature of 25 DEG C-50 DEG C under the stirring condition, and reaction products are subjected to water washing and freeze drying to obtain the functionalized graphene oxide bacteriostatic material. According to the method, a synergistic antibacterial agent is grafted onto graphene oxide by taking graphene oxide as a substrate, and the prepared product not only has the antibacterial property of graphene but also has the additional antibacterial property of ammonium halide.

Description

technical field [0001] The invention relates to the field of antibacterial materials, in particular to a functionalized graphene oxide antibacterial material and a preparation method thereof. Background technique [0002] Graphene is a new type of two-dimensional planar nanomaterial with a special monoatomic layer structure discovered in recent years. It has the characteristics of high chemical stability, good electrical conductivity, and large specific surface area. In recent years, people have made remarkable progress in the preparation of graphene, and developed a variety of new technologies such as mechanical exfoliation, crystal epitaxial growth, chemical vapor deposition and organic synthesis. In 2010, the antibacterial properties of graphene materials were discovered for the first time, which immediately attracted widespread attention from the academic community. However, graphene is not easily soluble in organic solvents, and its dispersion in the matrix is ​​poor, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/50A01P1/00
CPCA01N43/50
Inventor 张华宋少波张雯付海丽孙庆德王昌萌
Owner TIANJIN POLYTECHNIC UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap